Snubber



Aug. 30, 1927. 1,640,651

' J. l. EyEREsT .SNUBBER Filed Sept. 5, 1925 2 Sheets-Sheet 1 Humm Aug 309 J. l. EVEREST SNUBBER Filed Sept. 5, 1925 2 ShebbS-She'et 2 lPatented Aug. 30, 1927.

PATENT OFFICE.

JOSEPH I. EVEREST, OF LANGLOIS, OREGON.

SNUBBER.

Application led September 5, 1925. Serial No. 54,763.

This invention.. .relates to an improved snubber for motor vehicles and seeks, among other objects, to provide a device of this character which will effectually check rebound of the vehicle springs.

rlhe invention seeks, as a further object, to provide a device of this character embodying an oil cylinder and plunger and wherein an improved valve will be provided whereby the plunger may Vfreely shiftV u indicated by the arrows.

Figure 3 is a detail plan view of the anchoring bracket for the plunger.

Figure 4 is av vertical sectional vie-Wtaken medially through the oil cylinder. l 'Y vFigure 5 is a transverse sectional view' on the line 5 5 of Figure 4, looking in the' direction indicated by the arrows.

Figure 6 is a transverse sectional view on the line 6-6 of Figure 4, looking in the direction indicated by the arrows. j A Figure 7 is a sectional view showing the mounting ofthe ball of the plunger rod.

In carrying the invention into effect, I

employ a cylinder 10, the lower end wall (of which is thickened to form a squaredbearing block 11, and mating Vwith said block is a bearingk cap 12 detachably secured to the block by a plurality of cap bolts 13.

Supporting the cylinder isqa bracket 14 4F from which projects a rearwardly directed overhanging flange 15, and formed on the bracket is 'a cylindrical stem 16 which ter- 'minates in a ball head 17. As shown in lFigure 4, the block and cap 12 are recessed to form a. socket for the head 17, and extending from said recess is a conical openlng 17 freely accommodating the stem 16 so that the cylinder may freely rock upon the head. Interposed between the cap and block are shims 18 so that, by removing'55 one or more of said shims, the bolts 13 may be adjusted to take up any wear occurring between the parts. l In Figures 1 and 2 of the dra-wings, I have shown the bracket attached to the front -axle 19 of a conven- 60 tional motor vehicle. The adjacent front spring of the vehicle is indicated at 2O and one of the side bars of the chassis frame of the vehicle at 2 1. The pivotal connections between the spring and frame bar are conventionally illustrated and likewise the connection between the spring and axle is also conventionally illustrated. As will be observed, the flange 15 of the bracket 14 is engaged over the bottom flange of the axle. at the forward side4 of the axle, 'and freely fitting over the rear end of the bracket is an angle-shaped clamping plate 22 engaging over the bottom flange of the axle at the rear side of the axle. Screwed on the bracket at its rear end is a nut'23 adjust-able for advancing the plate 22 and tightly oind ing the bracket upon the axle. bracket may be readily attached.

Closing the cylinder 10 at its upper end isA 80 a removable screw cap 23 and reciprocable in said cylinder is a plunger 24 having ya plunger rod 25 slidable through a gland 26 on the cap. As shown in Figure 6, the plunl' ger 24 is provided with a plurality of elon- S5 gated passages 27,- and freely surrounding the plunger rod 25 is a` lflat valve/28 normally resting upon the, plunger to overlie said openings. The 'valve is preferably formed of a metal ring, and extending freely 90, through said valve at spacedpoints are up'- standing cap bolts 29 screwed into the plunger and having the heads thereof disposed in spaced relation abovethe valve for limiting the, valve in its upward movement to open position. Formed in the valveat the- Thus, the

'passages 27 are minute passages 30, one ofv said passages being preferably provided in connection with each of said first mentioned passages, and as 'will be observed, the valve is of less diameter than the plunger to provide an annular passage 30a at the periphery of the valve while .centrally thereof,r the valve is provided with a relatively large opening 30h. Formed in the bearing block 11` at one edge thereof, as shown in Figure 4,

l is a passage 31 through which the cylinder L may be filled withv oil, 'and normally closing said passage is a screw plug 32. Preferably', the cap 23 is equipped with a screw` plug 33 'which' may be removed when'the cylinder is being filled, to permit the escape of air from the-cylinder.

Fixed to the side bar 21 of the vehicle chassis is a bracket 34, the\ baseI plate of' which is bolted or otherwise secured to said.

bar, and rising from the base plate is an'up- Wardly inclined arm 35. Overlying the arm at opposite sides thereof are socket plates 36 vhaving hemi-spherical socket portions 37 embracing a ball head 38 on the plunger rod 25, and extending through said .plates and through the arm are bolts 39 rigidly secur; ing the plates to said arm. Thus', the bracket may be readily attached'and, in this connection, it will, of course, be understood that the 'ball head 38of the plunger rod is held within the socket formed bythe portions 37 of the socket plates so that the ball may rock within said socket. JThe ball head 38 is removably screwed on the plunger rod so that the valve 28\may be readily applied or re'- moved. Furthermore the head may thus be adjusted longitudinally of the rod for varying the effective length of said rod to suit the requirements of different vehicles, and screwed through the head, as shown in Figure 7, are aligned set screws 4Q engaging the plunger rod for securing thel head in adjustedposition. When these'screws are removed asuitable wrench may be engaged in the lopenings thus vacated for removing the head. Loosely fitting over the upper end of the bracket arm 35 to enclose the ball headl and its socket is a flexible boot or sleeve 4l enclosihg the upper end1 portion of i the plunger rod and tied at its lower'end about vthe base of the gland 26. This boot ma be of' leather or other suitable material an -as will beseen, will protect the parts from dust 30h, to.the upper end ofthe cylinder. Very little resistance will thus be offered to the downward movement of the plunger. Howi ever, upon thereturn of the 'vehicle' spring,

with consequent upward movement of the plunger, the valve 28 will be moved tov seat against the plunger in closed position so that the oil in the upper end of the cylinder can' I return to the lower end of the cylinder only through the reduced passages 30 of the valve. Thus, only a gradual upward movement of the piston .will be permitted so that t-he upward flexing effectually checked( V c A Having thus described the invention, what Il claim is: l

l. A snubber including a fluid cylinder, means for anchoring said cylinder, a plunger head reciprocable in the cylinder, a plunger rod extending from the plunger head through an end of the cylinder, means for anchoring said rod, the plunger. head of thel spring will be a valve freely mounted ony the gplungerod and resting in closed position on the plunger headoverlying the passage, therethrough,

said valve being provided with a restricted passage to register with the passage of the head and with a central 'fluid passage accommodating the plunger rod and appreciably greater than the rod in diameter.

being provided with a fluid passage,l andl 2. A snubber yincluding a fluid' cylinder,`lv

means for anchoring said cylinder, a plunger head.reciprocable in thevcylinder, a plunger rod extending from the head through an end of the cylinder, means for anchoring said rod, the plunger head beingprovided with a fluid passage, a valve freely surrounding the plpnger rod and resting in closed position on the plunger head overlying said passage, said valve being provided with a,

restricted passage to reglster with the pas- .sage of the head, and devices carried by the head and extending through the valve to guide the valve and limit its movement away from the plunger head to open position.-

meansfor ,anchoring said cylinder, a plunger reciprocable in the cylinder and having a (plunger rod, .means for `'anchoring said ro the plunger being provided with fluid passages, a valve disc freely surrounding 3. A snubber `including a fluid cylinder, i

the plunger rod and movable to closed posil' tion resting on the plunger and overlyin said passa es, said discibeing provided witl a restricte passage to register with tlie passage ofthe lunger, and cap' bolts car- Y ried b the p unger and extendin .freely Nthrong the valve, the heads Vof sald bolts in spaced relation to the valve limiting the lger to open position.

4. A snubber including a fluid cylinder having an `end wall providing a bearing block, a bearing capv mating with said block,

movement of the valve away. from the pluna bracket provided with a head confined beger reciprocable in the cylinder and yhaving tween said block and the cap and supporting a plunger rod provided with a head, a brackthe cylinder for rocking movement, a lunet provided with an arm, and socket plates ger recipro'cable in the cylinder'and eely fixed to the arm and-'provided withsocket 5 movable in one direction therein, means for 'portions embracing said head for pivot- 15 anchoring the plunger, and a valve carried ally connecting the plunger rod with said by the plunger for checking movement therebracket. of in the opposite direction. (g In testimony whereof I aix my signature.

5. A snubberincluding a fluid cylinder, y '10 means for anchoring said cylinder, a plun- JOSEPH I. EVEREST. 

